Module session 

Enums

Checked

Primary

Exact canary registration stage that failed.

Traits

Closed

Failed cleanup retains the fixed-file authority until every mapping closes.

Create

Capability setup retains the complete native owner on every failed stage.

Direct

Empty

Occupied

Pending

A live session permits cancellation without exposing mutable owner access.

Session

An idle capability session owns its canary mappings and fixed-file state.